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Oxidation-adsorption integral arsenic removal device and method for drinking water

A drinking water and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of high production costs, reduce treatment costs, reduce floor space, and reduce energy consumption. consumption effect

Inactive Publication Date: 2012-07-18
JIANGSU YONGTAI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the arsenic pollution in urban and rural drinking water caused by areas with high arsenic content and sudden arsenic pollution events, the concentration of arsenic after treatment by the existing arsenic removal device and method is still high, and the production cost is high. The present invention provides a An oxidation-adsorption integrated device and method for removing arsenic from drinking water organically combines oxidation, adsorption and membrane separation, and places it in the same reaction tank to complete the arsenic removal process. Deep arsenic removal process and device to ensure safe drinking water quality

Method used

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  • Oxidation-adsorption integral arsenic removal device and method for drinking water
  • Oxidation-adsorption integral arsenic removal device and method for drinking water
  • Oxidation-adsorption integral arsenic removal device and method for drinking water

Examples

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Effect test

Embodiment 1

[0054] Such as figure 1 As shown, an oxidation adsorption integrated drinking water arsenic removal device includes a water inlet control system, a reactor 5, an ultrafiltration membrane filtration system 6, and also includes an aeration oxidation system, a mud discharge system and an outlet water control system. The water inlet control system is connected to the reactor 5; the ultrafiltration membrane filtration system 6 is located at the middle and lower part of the reactor 5, and is connected with the water outlet control system; the sludge discharge system includes a sludge discharge valve 17 and a sludge discharge valve. Pipe, mud discharge valve 17 is located on the mud discharge pipe, is used to control the opening and closing of the mud discharge pipe, and one end of the mud discharge pipe is connected to the bottom half of the reactor 5 or the lower half of the reactor 5 side walls; the aeration Oxidation system comprises aeration pipe 16, air inlet valve 14 and air p...

Embodiment 2

[0064] Such as figure 2 As shown, an oxidation adsorption integrated drinking water arsenic removal device includes a water inlet control system, a reactor 5, an ultrafiltration membrane filtration system 6, and also includes an aeration oxidation system, a mud discharge system and an outlet water control system. The water inlet control system is connected to the reactor 5; the ultrafiltration membrane filtration system 6 is located at the middle and lower part of the reactor 5, and is connected with the water outlet control system; the sludge discharge system includes a sludge discharge valve 17 and a sludge discharge valve. Pipe, mud discharge valve 17 is located on the mud discharge pipe, is used to control the opening and closing of the mud discharge pipe, and one end of the mud discharge pipe is connected to the bottom half of the reactor 5 or the lower half of the reactor 5 side walls; the aeration Oxidation system comprises aeration pipe 16, air inlet valve 14 and air ...

Embodiment 3

[0079] Same as Example 2, the difference is that the arsenic-contaminated drinking water to be treated contains 0.8 mg / L of arsenic, the oxidant is a mixed gas of air and ozone, wherein the volume of air accounts for 99%, and the gas-water ratio is 40:1; The adsorbent is powdered iron oxide, the particle size is 100 microns to 250 microns, the dosage is 180 mg / L, and the reaction time in the reactor 5 is 15 minutes; the suction pressure of the suction pump 9 is in the range of 20 kPa to 30 kPa, The ultrafiltration membrane filtration system 6 adopts the submerged hollow fiber ultrafiltration membrane provided by Jiangsu Yongtai Environmental Protection Technology Co., Ltd., the membrane pore size is 0.02 microns, and the membrane material is polyvinyl chloride. The water flux of the ultrafiltration membrane is 35L / m 2 ·h; After 20d, open the sludge discharge valve 17 to discharge the saturated adsorbent in the reactor 5.

[0080] Compared with the previous fixed bed treatment...

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Abstract

The invention discloses an oxidation-adsorption integral arsenic removal device and method for drinking water, which belong to the field of deep arsenic removal of the drinking water. The device comprises a water inlet control system, a reactor, an ultrafiltration membrane filtration system, an aeration oxidation system, a sludge discharge system and a water outlet control system, wherein the ultrafiltration membrane filtration system is arranged on the middle lower part of the reactor and is connected with the water outlet control system; the sludge discharge system comprises a sludge discharge valve and a sludge discharge pipe; the aeration oxidation system comprises an aeration pipe, an air inlet valve and an air pump; and the water outlet control system is formed by sequentially connecting a water outlet valve, a sucking pump and a water outlet pipe, and is connected with the ultrafiltration membrane filtration system. According to the oxidation-adsorption integral arsenic removal device and method for drinking water, oxidation, adsorption and membrane separation are organically combined to be completed in a same reaction pool, and the advantages that: the engineering application is convenient, the fixed investment is low, the operation cost is low, and deep arsenic removal with the safety of water quality of the drinking water can be ensured, are realized.

Description

technical field [0001] The invention relates to the field of advanced arsenic removal in drinking water, and more specifically relates to an oxidation adsorption integrated drinking water arsenic removal device and method using an ultrafiltration membrane. Background technique [0002] Arsenic pollution of water bodies is a global problem. Based on geochemistry and sudden water pollution accidents, according to statistics, the population of my country polluted by arsenic in drinking water accounts for about 30% of the world's population. In view of the great harm of arsenic to human health, both the US Centers for Disease Control and the International Agency for Research on Cancer have designated it as a first-class carcinogen. Many countries and the World Health Organization have set strict standards for the content of arsenic in drinking water. The World Health Organization, Japan, Germany, the United States and my country successively adjusted the sanitary standard of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/28C02F1/58
Inventor 张炜铭吕路潘丙才吴军张淑娟俞冬辉
Owner JIANGSU YONGTAI ENVIRONMENTAL PROTECTION TECH
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